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Author Topic: My Perky's  (Read 683 times)

Offline john e. holliday

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My Perky's
« on: February 07, 2018, 04:09:33 PM »
These are being built using Larry Marx plans that were in the Ringmaster forum.   He doesn't say on the plans, but I'm guessing solid wire lead outs.  But I have thought of mono line buttons on the bell crank with a removable section over the wing like we used to do with our racing planes.  Or does the lead out have to be separate at the wing tip?  Also can I have them above the wing? ???
I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530


Offline bob whitney

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Re: My Perky's
« Reply #1 on: February 07, 2018, 05:43:26 PM »
Doc ,lead outs are up to u ,need to be carefull as they( the plane } like to tip over to the inside on landing and can kink the line or lead outs
rad racer

Offline Paul Smith

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Re: My Perky's
« Reply #2 on: February 08, 2018, 05:29:48 AM »
The official plans show NO controls at all, so whatever you do is legal.
Back in the day, Jim Walker would either collect a royalty or sue for it.  So some designers either showed no controls or some bogus system that everybody knew would be replaced with a bellcrank.

I like my controls on the bottom of the wing with an adjustable leadout guide. 
It's tough to get the leadouts inside the small elliptical wing. 

I like to start with buttons and leadouts for test flying.  Then if it goes fast enough to be competitive, you can switch to hooking up at the buttons.
Paul Smith

Offline C.T. Schaefer

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Re: My Perky's
« Reply #3 on: February 08, 2018, 06:00:56 AM »
I did that with my first one. works ok.  TS

Offline bob whitney

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Re: My Perky's
« Reply #4 on: February 08, 2018, 08:42:16 AM »
if it doesn't show any controls how about mono line y1 LL~
rad racer

Offline Paul Smith

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Re: My Perky's
« Reply #5 on: February 08, 2018, 09:33:03 AM »
The NASS rules define two lines of a certain length and diameter.
Paul Smith

Offline Motorman

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Re: My Perky's
« Reply #6 on: February 10, 2018, 12:18:32 PM »
hey Bob, how are you coming with those carbon fiber fuselages.
There will be a sunny day and we will fly our airplanes.

Offline john e. holliday

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Re: My Perky's
« Reply #7 on: February 16, 2018, 08:20:19 PM »
Boy what a clutz I am.  Spent most of the evening doing this bell crank for one of the Perky's.   I decided the wings are so thin that the bell cranks will go below the wing.  Hope the attached looks legal.   It is .20 music wire terminated with copper wrapping.   HB~>
I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530

Offline Bob Heywood

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Re: My Perky's
« Reply #8 on: February 17, 2018, 07:28:17 AM »
Boy what a clutz I am.  Spent most of the evening doing this bell crank for one of the Perky's.   I decided the wings are so thin that the bell cranks will go below the wing.  Hope the attached looks legal.   It is .20 music wire terminated with copper wrapping.   HB~>

Looks like it will hold up the Brooklyn Bridge...
"Clockwise Forever..."

Offline Motorman

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Re: My Perky's
« Reply #9 on: February 17, 2018, 08:56:03 AM »
.020 music wire in an aluminum bellcrank will last a little while, maybe 4-5 flights. I use .032 myself. Maybe Brett and Dan will chime in, they are the bellcrank attach point experts.
There will be a sunny day and we will fly our airplanes.

Offline john e. holliday

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Re: My Perky's
« Reply #10 on: February 17, 2018, 10:33:15 AM »
With these planes doing nothing more than take off, fly fast and land there be no worry about the bell crank from my past experience of using those bell cranks.  Even using cable lead outs I have yet to have one cut through on aerobatic with hundreds of flights on them. D>K
I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530

Offline Motorman

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Re: My Perky's
« Reply #11 on: February 17, 2018, 09:14:17 PM »
The bell crank is fine, I'm saying .020" lead outs might snap from vibration.
There will be a sunny day and we will fly our airplanes.

Offline RK Flyer

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Re: My Perky's
« Reply #12 on: February 20, 2018, 01:28:18 PM »
I have the plans for the Perky and I am wondering if anyone has used a 1/2 A engine ? Would the plane be reduced in size? Any ideas would help!!

Thanks, RK Flyer

Offline john e. holliday

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Re: My Perky's
« Reply #13 on: February 20, 2018, 09:08:37 PM »
A strong TeeDee should get it airborne. D>K
I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530

Offline Paul Smith

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Re: My Perky's
« Reply #14 on: February 20, 2018, 09:14:00 PM »
With an 18" wingspan, a Perky is 1/2A size.  It would need to be built light.
I built a 15-size Clown with a total weight of 8 ounces and it flys good on a TeeDee .049.

Rules limit nitro to 10%, which would be a killer for 1/2A.  But as a sport plane you could use all you want.  Maybe score a 75.
« Last Edit: February 21, 2018, 08:47:09 AM by Paul Smith »
Paul Smith


Tags: 1/2a perky ?